Improvement in key-fasteners



UNITED STATES LEONARD W. KENNEDY, OF OAKLAND, CALIFORNIA.

IMPROVEMENT IN KEY-FASTENERS.

Specification forming part of Letters Patent N o. 190,146, dated May 1,1877; application filed February 10, 1877,

To all whom it may concern:

Be itknown that I, LEONARD W. KENNEDY, of Oakland, county of Alameda,and State of Oalifornia,have invented a certain new and usefulImprovement in E scutcheons and Key- Fastenings; and I do hereby declarethatl the following is a full, clear, and exact description of thesaine, reference being had lto the accompanying drawings, forming partof this specification, in which- Figure 1 is a plan view, showing thekeyfastener in place; Fig. 2, a plan view of the same with thekey-fastener thrown open Fig. 3, a detached view of the key; and Fig. 4is an edge view of the same.

This invention has relation to means for securely locking the key toprevent its being turned while in the lock, and also, in connectiontherewith, of ya covering-plate to cover the key-hole; and theinventiontherefore consists in `the peculiar construction and arrangement of thesame, as will be hereinafter described, and subsequently pointed out inthe claim.

In the accompanying drawings, A represents the eseutcheon, secured tothe lockplate in the usual manner. The key-hole cover and clutch B ispivoted or screwed to the escutcheon A at a point under the keyhole.This cover .and clutch B is formed with an opening, a, for encircling-the shank D of the key E, and a square notch, b, for the re'- eeptionof a shoulder, o, upon either side of said shank.

It is evident, however, that the notch b may be made on a diskn formedupon the shank of the key, instead of forming it upon the cover B, andsaid cover may be provided with a shoulder to engage with the notch.

The cover and clutch is also formed at its end with a curved edge, d,and a cam, e.

The locking-plate C is formed with a lever, f, for throwing the coverand clutch aside, said lever operating in connection with the cam e uponthe cover B. The plate (l is formed with a suitable catch, g, by whichit may be operated, and also has a shoulder, h, and stop '5.

The operation of my invention will be readily understood from thefollowing description.

When the key E is turned so as to lock the door the cover B is swungaround, so that the opening o!l will encircle the shank of the key, andthe shoulder o thereon fit within the notch b, when the plate G isbrought around in position, so that the shoulder l1l lits downv upon thecurved seat d, and the stopt brought in contact with the outer edge ofthe cover, as illustrated in Fig. l. In this position the 'key issecurely locked and the key-holecovered to prevent persons from lookingthrough the same.

When it is desired to unlock the door, the cover B is thrown down byturning the plate C in the direction of the arrow until the lever fcomes in contact with the cam e, which will force it aside, and thecover will then drop Vfrom its own weight.

Having now fully described m'y invention, what I claim as new, anddesire to secure by Letters Patent, is- Y The cover B, formed withopening a, notch b, curved seatd, and cam e, in combination with theplate C, formed with shoulder h, stop t', lever f, and the key E, withshoulders c, substantially as and for the purposeset forth.

LEONARD w. KENNEDY.

Witnesses: J. H. REDsToNE, A. E. REDsToNE.

